// 常量

#include <stdio.h>

#define c1 1000
#define c2 "define"

int main()
{

    printf("c1: %d\n", c1);
    printf("c2: %s\n", c2);
    const int c3 = 1000;
    const char c4[] = "const常量";
    printf("c3: %d\n", c3);
    printf("c4: %s\n", c4);
    return 0;
}